1. School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China
2. Key Laboratory of Photoelectronic Imaging Technology and System, Ministry of Education, Beijing Institute of Technology, Beijing 100081, China
3. Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites, National Satellite Meteorological Center (National Center for Space Weather), China Meteorological Administration, Beijing 100081, China
4. Innovation Center for FengYun Meteorological Satellite (FYSIC), Beijing 100081, China